The Grim Reefer
Ready for some NOBALL!!!
Yes I now have two Whites and two Blues all ATI bulbs. I was comparing the ATI Blues with Aquaticlife Blues and there is no comparison in brightness. ATI wins hands down. So does brightness directly relate to PAR? The ATI is significantly brighter than the AquaticLife so I am thinking that I have increased my PAR.
It can but not always, your eyes can play tricks on you but if both lamps are roughly the same color the brighter one will have more PAR. You need to think intensity. A white lamp will look brighter but might not be as intense as a blue lamp so the blue will have higher PAR.